A single-time two-point closure based on fluid particle displacements

Details A single-time two-point closure based on fluid particle displacements A single-time two-point closure based on fluid particle displacements

2007-12-17

arxiv.org/abs/0712.2496v1

Physics of Fluids 18 (2006) 031706

Physics

Fluid Dynamics

Scientific paper

10.1063/1.2185683

A new single-time two-point closure is proposed, in which the equation for the two-point correlation between the displacement of a fluid particle and the velocity allows one to estimate a Lagrangian timescale. This timescale is used to specify the nonlinear damping of triple correlations in the closure. A closed set of equations is obtained without ad hoc constants. Taking advantage of the analogy between particle displacements and scalar fluctuations in isotropic turbulence subjected to a mean scalar gradient, the model is numerically integrated. Results for the energy spectrum are in agreement with classical scaling predictions. An estimate for the Kolmogorov constant is obtained.

Affiliated with

Also associated with

No associations

Rating

A single-time two-point closure based on fluid particle displacements does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A single-time two-point closure based on fluid particle displacements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A single-time two-point closure based on fluid particle displacements will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-115471